Sheet numbers on manufacturing drawings are assigned to each page in a drawing set, helping to organize and reference the different sheets, especially for complex parts or assemblies that span multiple pages. The sheet number is typically displayed in the title block or in a separate area on each sheet and is often paired with the total number of sheets (e.g., "Sheet 1 of 3"). This system helps ensure that all pages are used in the correct sequence, preventing missing or misplaced sheets during the manufacturing or review process. For instance, for a multi-part assembly, different sheets may show individual components, assembly views, or detailed sections, all linked through sheet numbering for clarity and consistency in production.